Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Brian Hasselfeld, MD

Individual provider Internal Medicine Physician · NPI 1700270360

Brian Hasselfeld, MD is an Internal Medicine in Baltimore, Maryland. Graduated from Tulane University School of Medicine in 2015, 11 years ago. Practices with Johns Hopkins Community Physicians, Inc, a 765-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Massachusetts and Maryland.

Years since qualifying
11
Trained at
Tulane University School of Medicine
Licensed in
MA, MD
In the registry since
2015
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1501 S Clinton St Ste 200
Baltimore, MD 21224
Phone: (410) 522-9940
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 75 Francis St, Boston, MA 02115-6110 — (617) 732-5500

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence D87400 (MD)
Internal Medicine Physician Taxonomy 207R00000X · Licence 263189 (MA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1700270360
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 22, 2015
Last updated in NPPESOctober 5, 2022
Certification dateOctober 5, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesPEDIATRIC MEDICINE
Medical schoolTULANE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2015 (11 years in practice)
Group practice Johns Hopkins Community Physicians, Inc — 765 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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